Depends on where obam shipping it. If it ships to my office i go UPS (I sign for packages at my office). Between the two, ultimately "prefer" UPS so I can accurately track my items, but USPS is almost always faster and delivers on Saturday.

I usually go for "cheapest and fastest" when it comes to shipping packages.

What really burns my cookies though is when I order something UPS and they ship it to my city, only to turn it over to the USPS for delivery! I have had many packages delayed by a day or better for the simple reason that UPS didn't feel like sending a truck out to my house (in the middle of the city and he was out here anyway for someone else)!

As far as FedEx/UPS goes though...they have developed a bad habit of dropping the package at the door and leaving, no doorbell ring, knock on the door, nothing! I especially hate this because I am (always) home and waiting for my stuff to get here!

I pick the USPS since they deliver on Saturdays and I know when they show up. Although with how late they've been getting here lately, I may start picking UPS since I believe they get here earlier in the day.

I always pick USPS because UPS doesn't get to my place until at least 4:30. I don't want anyone else receiving my packages because I'm sure my roommates wouldn't think twice before opening them. I like my roommates but they just don't understand the concept of privacy.

UPS has much better tracking that is way more reliable. I've never had any problem with them and the delivery people are super nice! My mailman just comes whenever and just throws my package in front of the door and walks away. >_<